Liquid dispenser



March 17, 1925.

A. E. ECKERT LIQUID DISPENSER Filed Sept. 24

Patented Mar 1?, 1925 V Ul'll 5 ADQLEF'H nnonnn r, OF OAK PARK,ILLINDIS.

LIQUID {)1SItIzlIN'SER.

Application filed September 24, 1924. Serial No. 739,450.

To aZZ 11:71am ii may eonccrn:

Be it known that I, ADOLPH E. ECKERT,'

a citizen of the United States of America, and a resident of Oak Perl cCook County, Illinois, have invented a certain new and usefulImprovement in Liqnid Dispensers, of which the following is aspecification.

' This invention relates to improvements in liquid dispensing devices,and particularly in to apparatus used, for dispensing syrups inconnection with fountain equipment for serving soda water, ice cream andvarious mixed beverages, such as disclosed, in my prior applicationSerial No. 657,663 filed if; ln u'st 16. 1823. i

1 6 object of the invention to provide an'irnprove l construction for adis-- )ensin device characterized es eeiallv h l 27: 7

" the simplicity of mechanical detail, uni- --formit3; and regulation ofthe volume oi liquid dispensed, of operation and other features tendingto promote greater economy and better service.

A further object of the invention is to :5 provide a dispenser in whichthe mechanieal and moving parts are so designed and constructed as topermit. the complete and ready disnmnl-li'ng of the apparatus for thepurpose of cleansing; and sterilizing, if'neo- 3o essary. As can bereadily appreciated,

40 without the use is illustrated Figure l is a View in vertical.section oi the dispensing le ice.

Figure 2 is an enlarged cletuii View of the pomp operating mechanismshowing the parts disconnected for the purpose of removal.

I taken on .line i, 4, of Figure 1.

Figure 3 is an enlarged (let-ail View incross sectiontaken on line 3, 3,of Figure l, and

Figure I} a detail view in cross section The dispensing device is housedwithin and forms a part of a jar or container 1 from which the liquid isdispensed. The jar 1, is removably mounted Within an ice compartmens 2,and having oblique front wall 2* and an oblique portion in its top wallhaving an opening in which the jar is inserted, the latter assuming aninclined position of say 30 to the vertical, and fee"- ing rearwar llyfrom the service counter.

The jar 1 is provided with a shoulder 1 at its upper end which engagesaround the opening in the compartment 2.

The jar hasn relatively large opening in its top well, preferably of anoval slm )Q and surrounded by a flange or lip 1". A. flanged plate 3,fits over the openings, and not only forms a closure for ihe jar, butserves as 21 supporting plate for the dispensing niechar nism, so thatall parts can be removed as n unit in the refilling or cleaning of thear.

Near the lower edge of the plate 3, is a fixecl spout 4, exicndingrearwardly in horizontal position, and having a slowntnrnetl end. Thespout is provided with an extension, below the plate 3, having the formof apipe 5, extending parallel to'ihe axis of the jar and connected witha cylinder ti, inonntcii n shori distance below the plate 3,

and located generolly in the upper portion of the The cylinder isfurther connectecl with the plate 3, by means of a slotted stud or post'7 soirl post and pipe 5 aciing to support ihecylinder at (limnetricallyopposed points "to the plate 3 above.

'Within the cylinder is :1 piston 8, secured to a piston r-nrl 1?extending through the upper end or head of the cylinder.

{he eml of the PlS -Ull roil is 0 slot} S) extending a short distanceongitnilinnlly' of the rod. Supported my the post 7' is n lever ll pro-\iileil lniilwzi its lower ed e will! a notch or recess 11*, zulapti-(lto engage u pin 7* oxlmnling: transversely oi the lot in the post 7,snitl notch between its ends and along and pin forming a fulcrumremovably supporting the lever 11. At the end of said lever adjacent thepiston rod 9 is formed a cam-like head or enlargement 12, which entersand engages in the slot 9 at the upper end of the piston rod. At theopposite end of the lever is another and slightly larger head 13, havinga rounded cam surface at its upper edge. This end of the'lever has asimilar form of connection with a plunger consisting of a rod.14,passing through the plate 3, and provided at its upper endwith a head15. At the lower end of the rod is formed a cam slot 11 openingdownwardly and adapted to straddle the cam head 13 of the lever 11.

As clearly shown in Figure 3 the fulcrum pin 7 extends outwardly at eachend, these end portions forming a support for a spring 16, which acts tooppose the pressure on the plunger head, in operating the pump and torestore the parts to their initial position after the pressure has beenreleased. This spring is of a special form consisting of wire bent toform two coils 16 arranged in axial relation to each other and connectedby a U-shaped portion 16'. The opposite ends of the coils extend instraight free end portions 16, 16, at right angles to the U- shapedportion 16" and terminate in semicircular hooked extrcmities 16, 16",bent at right angles and toward each other. This spring is supported onthe ends of the pins, each coil 16 being inserted on one of the pins,with the U-shaped portion )6 extendmg lengthwise of the lever 11 towardthe piston end, and straddling the top edge thereof, the free endportions 16, 16 extend in the direction of the top plate 3, and alongthe post 7, the hooked ends passing around the post from opposite sides.The spring wire is sulliciently flexible to permit the spring to beeasily removed by springing the hooked ends free of the post, thusallowing the coils to be taken from the pins, thereby releasing theentire spring. To replace the spring the reverse operations are carriedout-a matter of a few seconds.

The plunger rod 14, as already explained, passes through the plate 3.and as a bearing therefor a cylindric bushing or collar 17 is mountedon'the plate and projects upwardly therefrom. Extending lengthwise ofthe initial base of this collar is a slot 17 adapted to be engaged by apin 14" projecting from the plunger rod it near its lower end at rightangles to the cam' slot 14 adjacent thereto. The slot 14: in the base ofthe collar is disposed at an angle of 90 to the normal position of. thep n. so that it is necessary to rotate the plunger rod through thisangle before the two will register". Obviously, this cannot be doneunless the lever 11 is released from the cam slot 11", and 1s a. result,the plunger is prevented from sliding upwardly through the collar by thepin 14 so long as itis held against axial rotation by the lever 11.

However, by removing the spring 16 in the manner described, the lever 11can be moved endwise sufficiently to release one end from the slot inthe piston rod, and then completely removed. This permits the plun gerrod to be turned until the pin 14" registers with the slot 17* whereuponthe plunger rod can be withdrawn entirely. Thus it will be manifest thatall of these parts can be readily disconnected and entirely removed fromthe apparatus.

Associated with the plunger rod is a regulating sleeve 18 whichsurrounds the plunger rod and encloses the collar 17, Inside of thissleeve 18 is a plurality of longitudinal slots 19 which vary in length.These slots are adapted to register with and engage a key 20 extendingaxially along the outside of the collar. By lifting the sleeve todisengage the key from a particular slot. 19 engaged thereby, the sleevecan be rotated to bring another slot opposite said key, therebyelevating or lowering the sleeve with respectcto collar 17, and likewisedecreasing or increasing the stroke of the plunger. In this way thevolume of liquid dispensed by a single stroke of the piston can beregulated. This feature of the apparatus has been fully discussed in theprior applica tion, and since it is not an essential part of the presentinvention. need not be discussed further. However, it is to be observedthat with the removal of the plunger rod from the bearing collar 17. hisregulating sleeve also becomes readily tached.

Referring again to the cylinder 6, and the piston 8, the latter consistsof a metal disk secured to the lower end of the piston rod and havingpassages 20 therethrough offset on either side of the axis of the pistonrod. On top of the piston is a check or flap valve 21, which opens andcloses as the piston travels in its downward and upward stroke. Furtherdetails of the piston valve may be omitted as it is more fully describedelsewhere. At the lower end of the cylinder is a removable head 23,having screw threaded connection with the cylinder through the medium ofan internally threaded flange 23". At the central portion of thecylinder head is a. hollow boss 24 into the bottom of which isscrewed'an inlet pipe 25, extending axially to a point just clear of thebottom of the container 1. The upper end of the inlet pipe projects ashort distance into the inte; rior of the hollow boss 24 and forms a.lip on which seats a flat metal disk 26, forming a check valve forcontrolling the intake of 3: liquid into the lower end of thecylin- Justabove the-valve disk 26 is a pin extending diametrically across the vave cavity above the disk. As shown in Figure 4 this pi? ed at r This topermit the complete disasmamlfly l. pump and operating l'nemlwars.

a liquid dispenser, the combiuiit-im'i snnp con'lprising a cylinder.{mum ton mil a pump support comp Eng 1 and a POSl PGlUlQCtlllg saidplate mil index", a plunger rod mountmi will lever fulcrumwlintemnecliatu 011m :t-nsl having cum slot cunnecfi i in may ()Sli! endswlth said piston and plun- Of a 2i and, a spmng msmmcl adjcmmt ths mm ofsaid lever and (letaclmblv. to new w-iamflval of said lav/er and Saul pmia, a liquid dispenqor, Hm cnmlximnun up mmiprising 1L {:ylinilm aplstun Yon 1nd, a pump support mmpii ing ml {L post (mmwting said plateanal Kiev, 9. plunger Y")l mounted ll? said :1 law? i'uli'rmnr-xlintm'mmlmu;in; l'lavir Pill-1 and slot comm-rim: wt-

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a spring mnumw'l niljzw-ont In? I "rum 0f Said levvr mill swing to 2% LTr on its fulvmm, said spring 2; ,bali'lle {0 permit flu 'ltlaalrmwl li"yr, out of opv'rativc vounwtiw sink lam I tfe'z'lu." l pv'mn andplunger rods,

lm in 2i lzquinl (llspvnsw, film comlumhmi i lriie, a cylinder (lepmulmgfrom 21ml commuting said plate with mm Y. M mud cylinder, :1 pwlon :11said (glinmg: :1 plsfon rocl exlr'mling axially i mm), nl cylinder adacent said pus! :1 age?! lzmgm rml nmunlcrl. for enrlwiw movmiient 1m;said post a 1mm flzlcimnml lfllkifit? mi ls in a slut insulin! inSlllfil '7 Wal of Fillx'l lm'vr mgugmg mm 1 flu: M515; of Said pistonLlllii plunger Eng ileiaPllably mammal on will living :1 pm'llon :ulapml to engage ii In a liquid dispenfivr, the combination a support-forsaid vlin lur, plat:- and a pust commuting ill one end of said cvlindei.ii on mzllrl cylinder having a iston all (10ml i nxially r'mm saidcylinder an:

H1 post, :1 plunger rod mounted adja- Ll post and pm'nllvl therewith,lever I :lu'mwli a lwngitudinal alot in mid Hlltl fulurumwl intvrmmlinh:it"s r-mls Hm vwla nf ltl lever engaging a Film" in will piston lUllmail an apmling in Said ylungri r031 21 ii-united on wild post andhaving a 1'1 zulnpiml to Engage said li' -13 said 1 19 :ioz'nm v holdingsuicl lPVf'l on its T. 1 21 0. liquid llispcnse'r, tlm cmnhimatiun ml awimp mmz n'ising a cylinder, piswn and eud uai support compms' ll;2;"6321 I plate and a post connecting said plate and said cylinder, andprovided with a longitudinal slot theretln'ough, a lever passing throughsaid slot and l'ulcrumed intermediate its ends, a plunger rod extendingthrough said plate, said piston and-plunger rods having cam slotsadapted to be engaged by the ends of said lever, and a spring detachablymounted on said post and engaging said lever.

8, In a liquid dispenser, the combination o t' a pump comprising acylinder, piston and piston rod, :1 pump support comprising a plate anda post connecting said plate and said cylinder, and provided with alongitudinal slot therethrough, a lever passing through said slot, :1pin extending transversely of said post and supporting said leverintermediate its ends, a plunger rod supported in said plate andprovided with an endwise opening slot adapted to be en.- gaged by oneend of said lever, the other end being insertable in a slot forn'ied insaid piston rod, and a tension member comprising coils mounted on theends of said pin, and end portions engaging said lever and said post,said spring being detachable to ell'ect the removal of said lever andsaid plunger.

2). In a. liquid dispenser, the combination of a pump and a supporttherefor, and pump actuating mechanism, comprising a lever remo ablysupportml intermediate its ends on a fixed fulcrum, and provided withcam surfaces at its opposite ends, said pump including a piston andpiston rod, the latter being provided at: its end with a slot adapted tobe engaged by one end of said lever, a plunger mounted in said pumpsupport and pre vided at its lower end with an endwise opening cam slotadapted to engage the opposite end of said lever and a removable tensionmember acting on said lever.

10. In a liquid dispenser, the combination of a cylinder and a supporttherefor, a piston in said cylinder and a piston rod extending throughthe head of said cylinder, a lever removably fulcrumed intermediate itsends adjacent said cylinder, and having at -am and slot connection withsaid piston rod, a plunger rod mounted in a bearing in said pumpsupport, and having a cam slot at its free end adapted to engage theadjacent end of said lever, and pin adapted to register with a notch insaid bearing whereby said plunger may be removed when disengaged fromsaid lever.

11. In a liquid dispenser, the combination of a cylinder having aremovable head at 'one end, a support for said cylinder, a piston insaid cylinder having a piston rod extend ing through the supported endof said cylinder, a lever fnlcrumed intermediate its ends adjacent saidcylinder and having a cam and slot connection with said )iston rod, aplunger rod extending through said cylinder support, and having a, camand slot connection with the opposite end of said lever, and a springreinovably supported on said pump support and acting on said lever,whereby on the removal of said spring, said lever and plunger can bedetached from said support and upon the removal of said cylinder headthe piston and rod can be removed from said cylinder.

Signed at Chicago, 11]., this 13th day of September, 1924.

ADOLPH E. ECKE RT.

